USPTO Patents Application 10734314

PATENT ABSTRACTS OF JAPAN

(1 1 publication number : 03-048587
(43)Date of publication of application : 01.03.1991

(51)Int.CI.

H04M 5/46
H04N 7/01

(21 application number

01-182668

(71) Applicant :

HITACHI LTD

(22)Date of filing :

17.07.1989

(72)Inventor :

KATSUMATA KENJI

HIRAHATA SHIGERU

SUGIYAMA MASAHITO

NAKAGAWA HIMIO

(54) WIDE PICTURE/REGULAR PICTURE TELEVISION SIGNAL RECEIVER

(57)Abstract:

PURPOSE: To make the selective reception possible by switching for the
output signal of an IDTV processor converted to a wide aspect ratio and
the output signal of an EDTV processor, and displaying them in the wide
aspect ratio.

CONSTITUTION: Both terrestrial and satellite broadcast, after being
channel- selected with tuners 103 and 104, are inputted to and processed
at the IDTV processor 105 and the EDTV processor 106, and are outputted
as signals of double speed scan, respectively. The signal processed with the
IDTV processor 105 is aspect-converted so as to be displayed as the
aspect ratio at an aspect ratio conversion circuit 108, and time
compression in a horizontal direction is performed on the signal, and a
picture with a radio of 4:3 is displayed in the center of a screen by shielding
both ends by blanking. A switch circuit 109 is controlled with the detected
signal of an EDTV signal detecting circuit 107, and switches an EDTV signal
and a regular TV signal. And the signal is displayed in the wide aspect ratio
on a display 110 with a ratio of 16:9.

r

•i

LEGAL STATUS

[Date of request for examination]

[Date of sending the examiner's decision of rejection]

[Kind of final disposal of application other than the examiner s

decision of rejection or application converted registration]

[Date of final disposal for application]

[Patent number]

[Date of registration]

[Number of appeal against examiner's decision of rejection]
[Date of requesting appeal against examiner's decision of
rejection]

[Date of extinction of right]

Copyright (C); 1998,2003 Japan Patent Office

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